<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <menu-item :title='title' content = 'hello' @func = 'getMsg'></menu-item>
    </div>
    <script src="../node_modules/vue/dist/vue.js"></script>
    <script>
        var vm = new Vue({
            el:'#app',
            data:function(){
                 return {
                    title: '父组件数据'
                }
            },
            methods: {
                getMsg(val){
                    alert(val)
                }
            },
            components:{
                'menu-item':{
                    data:function(){
                        return{
                            msg:'子组件数据'
                            
                        }
                    },
                    template:`<div>{{msg + "--------" + title + "-------"+content}}
                                <button @click="sendMsg">子组件数据</button>
                            </div>`,
                    props: ['title','content'],
                    methods: {
                        sendMsg(){
                            this.$emit('func',this.msg)
                        }
                    },
                }
            }
        })
    </script>
</body>
</html>